Chemical Potential of Equilibrium Electromagnetic Radiation and the Means for Electromagnetic Waves to Propagate in Free Space

The article shows that in case if the photon is viewed as a particle moving in empty space
the zero value of chemical potential of equilibrium electromagnetic radiation cannot be explained
basing only on first principles of statistical physics. On the contrary, to explain the chemical
potential of equilibrium electromagnetic radiation being equal to zero is rather simple if the photon
is considered as a quasi-particle that is the way to describe collective motion of a system consisting of
particles whose number is a fixed value. Collective motions of the particles of mentioned system are
interpreted in the article as oscillations of an electromagnetic field that corresponds to observation
data of modern astronomy, according to which the space, that fills the gaps, both between massive
objects and between massive particles forming them, should be attributed to characteristics of a
continuous medium.
Category:Condensed Matter